PLX Devices DM-200 OBDII - Manual (Page 12)

Users Guide: iMFD User Guide
Version 1.0 Jan 1, 2008
www.plxdevices.com
(408)745-7591
12
3.3.2 Data Polling
Data Polling means that the SM-OBD “gets” an updated value from the vehicle’s ECU (Engine Control
Unit). You can choose to turn ON or OFF Data Polling for Sensors 1,2,3,4. The more sensors you have
set to ON, the slower the refresh rate will be. It is recommended that you turn on data polling only
on sensors you wish to monitor, thus maximizing performance. By default, your unit comes
preprogrammed with only sensor 1 data polling ON. Sensor 2,3 and 4 are by default OFF.
For example, If you have your SM-OBDII set to:
Sensor1 = RPM
Sensor2 = Throttle Position
Sensor3 = Vehicle Speed
Sensor4 = Timing
And
Sensor1 Data Polling = ON
Sensor2 Data Polling = ON
Sensor3 Data Polling = ON
Sensor4 Data Polling = ON
RPM, Throttle Position, Vehicle Speed and Timing will all be monitored. However, the refresh rate of each
sensor is divided into 4. If you only wish to monitor RPM and nothing else, by setting
Sensor1 Data Polling = ON
Sensor2 Data Polling = OFF
Sensor3 Data Polling = OFF
Sensor4 Data Polling = OFF
Will lead to higher performance for sensor 1.
3.3.3 Programming Sensors Modules
Each sensor module, can be programmed into any of the available OBDII sensors. A list of the sensors are
below and can be programmed in the following setup menu. Keep in mind that if your vehicle may not
support all the sensors listed below.
1) ABS THROTTLE (Absolute Throttle Position)
2) ENGINE RPM
3) VEHICLE SPEED
4) ENGINE LOAD
5) TIMING
6) INTAKE MAP (Manifold Absolute Pressure)
7) INTAKE MAF (Mass Air Flow Sensor)
8) STFUEL B1 (Short Term Fuel Trim Bank 1)
9) LTFUEL B1 (Long Term Fuel Trim Bank 1)
10) STFUEL B2 (Short Term Fuel Trim Bank 2)
11) LTFUEL B2 (Long Term Fuel Trim Bank 2)
12) AIR INT TEMP (Air Intake Temperature)
13) COOLANT TEMP 14) FUEL PRESSURE
15) O2VOLTAGE 1B1 (Narrowband O2 Sensor Voltage 1 Bank 1)
16) O2VOLTAGE 1B2 (Narrowband O2 Sensor Voltage 1 Bank 2)
17) O2VOLTAGE 2B1 (Narrowband O2 Sensor Voltage 2 Bank 1)
18) O2VOLTAGE 2B2 (Narrowband O2 Sensor Voltage 2 Bank 2)
19) FUEL LEVEL
20) CAT TEMP 1B1 (Catalytic Converter Temperature 1 Bank 1)
21) CAT TEMP 2B1 (Catalytic Converter Temperature 2 Bank 1)
22) CAT TEMP 1B2 (Catalytic Converter Temperature 1 Bank 2)
23) CAT TEMP 2B2 (Catalytic Converter Temperature 2 Bank 2)
24) ECU VOLTAGE
25) ABS ENG LOAD (Absolute Engine Load)
26) AMB AIR TEMP (Ambient Air Temperature) "AMB AIR TEMP");